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NVD description
siyuan versions <= 3.7.3 (fixed in v3.7.4) contain a server-side template injection vulnerability in the attribute-view Template calculation feature (introduced in v3.7.0-beta.1). The feature's template engine uses Sprig's unmodified function map, which still exposes the env, expandenv, and getHostByName functions that were removed elsewhere for CVE-2024-55660. A local, unauthenticated attacker (the kernel binds to 127.0.0.1 by default with no per-UID access control) can inject a malicious Template calculation formula to read environment variables belonging to the account running siyuan — including from a separate, unprivileged OS account — and to perform DNS lookups from the server's network position.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
NONE
CVE-2026-73047 Server-Side Template Injection in Siyuan <= 3.7.3 via Sprig Functions https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-73047
Post summary
The post announces CVE‑2026‑73047 as a Server‑Side Template Injection in Siyuan versions up to 3.7.3 via Sprig functions, with no PoC, exploit details, or patch information provided.